大别山南坡水土保持策略研究

Investigation and Strategy Study of Soil and Water Conservation in the South of Dabie Mountains

以大别山南坡皖河石牌水文站的径流量、含沙量与输沙量作为流域水土流失的相关性指标,研究其水土流失成因和发生时间,提出水土保持策略与措施。皖河输沙量变化与含沙量、径流量波动有正相关性,表明暴雨型降水是水土流失的根本原因,6-7月暴雨期是水土流失高发时段。继续做好水土保持,策略与措施直接针对6-7月份的强降水过程。

The runoff, sediment concentration and sediment load of Wan River hydrological station in south Dabie Mountain were used as correlation indicators to investigate the regularity and possible cause of soil erosion which further provided the strate-gies and methods for soil and water conservation.The sediment discharge variation of Wan River was positively related with the fluctuation of runoff and sediment concentration , indicating that rainstorm in June and July is the high time of soil erosion and the storm-type of precipitation is the root cause.The key strategies for soil and water conservation should be directly focused on the heavy rainfall in June and July.